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  • All fields: platyrhynchos
(83 results)



Display: 20

    • Mallard ducks in a Wetland

    • animals; aves; Birds; Birds; duck;ducks;Waterfowl; New Jersey
    • Adult male in alternate plumage is unmistakable. Females, immature and eclipse-plumage males could be confused with Black Ducks, Gadwalls and Mottled Ducks, but note the blue speculum with white borders on both sides. Gadwalls are also distinctive...
    • Mallards

    • Aquatic birds;
    • Two mallard ducks at John Heinz National Wildlife Refuge, PA.
    • Lead hazards to fish, wildlife, and invertebrates: a synoptic reivew

    • Biologists (USFWS); Water; Fishes; Pollutants;
    • Lead (Pb) and its compounds have been known to man for about 7,000 years, and Pb poisoning has been recognized for at least 2,500 years. All credible evidence indicates that Pb is neither essential nor beneficial to living organisms, and that all...
    • Mallards

    • Birds; Aquatic birds; Wildlife refuges;
    • Female mallard ducks at John Heinz National Wildlife Refuge, PA.
    • Mallard Brood

    • Birds; Aquatic environments; Waterfowl; Ducks; Donna Dewhurst Collection; Alaska
    • This image was taken at Cheney Lake, Anchorage, Alaska.
    • Mallard

    • Birds; Migratory birds; Waterfowl;
    • Close view from rear of bird sitting in water.
    • Mallard

    • Birds; Migratory birds; Waterfowl;
    • Mallard feeding in "bottoms up" position. Vertical.
    • Mallard hen

    • Birds; Shorebirds; Waterfowl;
    • A mallard hen is pictured swimming in water.
    • Mallard

    • Birds; Shorebirds; Waterfowl;
    • A close up shot of a mallard.
    • Mallards

    • Birds; Shorebirds; Waterfowl;
    • A group of mallards is seen swimming around.
    • Mallard

    • Birds; Shorebirds; Waterfowl;
    • A mallard looks back as it stands on a log.
    • Mallard Hen

    • Birds; Waterfowl; Ducks; Donna Dewhurst Collection; Alaska
    • This image was taken at Westchester Lagoon, Anchorage.
    • Mallard Drake

    • Birds; Waterfowl; Ducks; Donna Dewhurst Collection; Alaska
    • This image was taken at Westchester Lagoon, Anchorage, Alaska.
    • Mallards

    • Birds; Waterfowl; Ducks; Donna Dewhurst Collection; Alaska
    • This image was taken at Westchester Lagoon, Anchorage, Alaska.

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